#7892, "RE: how can you tell the difference between a 3.55 & 3.94 differential" In response to In response to 1
So, it could be save to say that the differential from the 3.94 will not work in a 3.55 trans?
Sorry for the hijack
Back to the original question though, if you have the part number on the outside of the trans you could check that and see if it matches with the right part #. http://www.neons.org/forumdodge/trans.htm